nodejs/test/parallel/test-uv-binding-constant.js

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'use strict';
require('../common');
const assert = require('assert');
const uv = process.binding('uv');
// Ensures that the `UV_...` values in process.binding('uv')
// are constants.
const keys = Object.keys(uv);
keys.forEach((key) => {
if (key === 'errname')
return; // skip this
const val = uv[key];
assert.throws(() => uv[key] = 1,
/^TypeError: Cannot assign to read only property/);
assert.strictEqual(uv[key], val);
});